About the Authors
- Karla J. F. Satchell
- Department of Microbiology-Immunology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, United States of America
The authors have declared that no competing interests exist.
Conceived and designed the experiments: HGJ KJFS. Performed the experiments: HGJ. Analyzed the data: HGJ KJFS. Wrote the paper: HGJ KJFS.